JS-ES6

When was JavaScript created?

• 1997

• 2009

• 1998

• 1995

What is the purpose of a transpiler in JavaScript?

• To downgrade the source code to support older browsers

• To convert JavaScript code to a different language

• To compress the JavaScript code

• To upgrade the source code to support newer browsers

What is the syntax for an arrow function in ES6?

• function myFunction() => {}

• () => {}

• function myFunction() {}

• function myFunction() => {}

What type of scope does ES6 introduce?

• Local scope

• Function scope

• Block scope

• Global scope

What is the purpose of the spread operator in JavaScript?

• To support functions with a variable number of parameters

• To calculate the minimum of an array

• To convert an array to a list of parameters

• To combine two arrays into one

How does the rest parameter differ from the spread operator?

• The rest parameter is used to combine two arrays into one

• The rest parameter is used to have a fixed number of parameters and a variable number of parameters combined

• The spread operator is used to support functions with a variable number of parameters

• The spread operator is used to convert an array to a list of parameters

What is the purpose of destructuring in JavaScript?

• To combine two objects into one

• To support old browsers with transpiler

• To extract values from a data structure and assign them to variables

• To convert an array to a list of parameters

What is the syntax for array destructuring in JavaScript?

• {a, b} = array

• [a, b] = array

• (a, b) = array

• a, b = array

How can template strings make it easier to work with strings in JavaScript?

• By providing a way to describe the input of a function

• By allowing the use of regular expressions

• By providing a shorter syntax for string concatenation

• By allowing the use of arrow functions

What is the purpose of a tag function in template strings?

• To extract values from a data structure and assign them to variables

• To support functions with a variable number of parameters

• To provide a prefix for the template string

• To convert the template string to a regular string